Mama, I know it's scary to notice things like this sa baby, pero this really needs a doctor's check, especially since your pedia mentioned the fontanelle might be closing early. Please don't wait on this one, okay?
A few of us mums have worried about similar things before, and honestly, what looks alarming to us sometimes turns out totally normal, but it's the pedia who needs to assess, hindi kami. Bring her back for a proper evaluation soon, or if you're really concerned, don't hesitate to go to the ER. That's what they're there for, at peace of mind is worth it, di ba? Sending you a tight hug, you're doing great by being observant.